Drain-valve for water-supply pipes.



No.-731,063. I PATENTED JUNE 16, 1903 J. J. MAY.

DRAIN VALVE FOR WATER SUPPLY PIPES.

APPLICATION I'ILEU'JAK. 16, 1903.

H0 MODEL.

WITNESSES V! on ATTORNEYS UNITED STATES- Patented June 16, 1903.

PATENT -OFFIcE.

DRAIN-VALVE FOR WATER-SUPPLY PIPES.

SPECIFICATION forming part of Letters Patent No. 731,063, dated June 16,1903.

' Application filed January 16,1903. Serial No. 139,265. (No model.)

To all whom it may concern:

Be it known that I, JOHN J. MAY, a citizen of the United States,residing at Staten Island, in the county of Richmond and State of NewYork, have invented certain new and useful Improvements in Drain-Valvesfor Water-Supply Pipes, of which the following is a specification, suchas will enable those skilled in the art to which it appertains to makeand use the same.

. The object of this invention is to provide an improved drain -valvefor water-supply pipes which may be connected with watersupply pipeswherever necessary and which is particularly adapted for use inconnection with water-supply pipes in houses and other buildings and bymeans of which water may be drained at all times from the main waterpipeof a house, the valve being preferably connected with the street-main orstreet-main connection.

The invention is fully disclosed inv the following specification, ofwhich the accompanying drawings form a part, in which the separate partsof my improvement are designated bysuitable reference characters in eachof the views, and in which- Figure 1 is a side elevation of a part of a7 In the drawings forming part of this specification I have shown at a awater-main or street-pipe connection by which the mainis connected witha house, and at b the ordinary house supply-pipe by which the water issupplied to a house and the various parts thereof. The pipe orconnection a is provided with the valve 0 in the usual manner, and theconnection between the pipe at and b is made in the form of constructionshown by means of a coupling (1.

My improved drain-valve is shown ate and is connected with the coupling(2 by a pipe f. The drain-valve e comprises a casing g, the bottomportion of which is provided with a valve-seat g and connected with thecasing g is a pipe 9 by means of which the drainwater may be conveyed toany desired point. Connected with the top of the casing g is a head g,this connection being preferably ranged casing 7L2.

threaded cap g and secured to the casing go by the head g is a frame orsupport h, the top of which is provided with a vertically-ar- Passingvertically through the head 9 and through the top of the frame It andinto the casing g is a valve-rod its, the lower end of which is looselyconnected at h with a valve M, which is adapted to be seated on thevalve-seat g and the frame h is preferably provided at the top thereofand within the casing h with a thimble 7L6, through which the rod 71passes and around which is placed a spiral spring 2', and screwed ontothe upper end of the rod 7L3 is another thimble or cap j, having aflange or rim 3'", which bears on the spring 1', and the upper end ofthe rod h is also provided with a set-nut k. The'valve-rod 72,3 isloosely movable through the head 9 and the shape of the valve h is suchthat it is provided at the bottom thereof with an annular projectingportion 717, and when the water is allowed to pass into the casing g atfull pressure it will depress the valve 72 onto the valve-seat g and thewater cannot escape through the valve-casing g. At this time the waterwill be free to flow up through the pipe I) under normal pressure to allparts of the house; but if at any time-it is desired to drain the pipeI) and other pipes of the house system all that is necessary is to closethe valve 0. The pressure will not-then be sufficient to close the valveh, and the spring 11 will at once raise said valve and the water will befree to flow out through the casing g, as will be readily understood. Itwill be apparent that the tension of the springc' may be regulated asdesired, and the closing-head g of the valve-casing g may be of anydesired form or construction, and in the form of construction shown Iplace on the valve h a sleeve 'm, designed'to limit the upward movementof the valve 72/ My improved drain-valve is simple inconstruction andcomparatively inexpensive, and changes in and modifications of theconstruction thereof, as herein shown and described, may be made withoutdeparting from the spirit of my invention or sacrificing its advantages.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is v 1. A device of the class described comprising a valve-casing open at the bottom and the top and at one side, aremovable plug or head for closing the top opening, a valve mounted insaid casing and adapted to be depressed onto the valve-seat in thebottom thereof, a valve-rod connected with said valve and passingupwardly and loosely through said plug or head, and a spring supportedabove said plug or head and operating in connection with said valve-rodand normally serving to hold said valve slightly above its seat,substantially as shown and described.

2. A drain device for water-pipes, comprising avalve-casing open at thebottom and top and at one side, a removable plug for closing the topopening, a valve mounted in said casing and adapted to be depressed ontothe valve-seat in the bottom thereof, a valve-rod connected with saidvalve and passing upwardly and movable through said plug, a framesecured to the valve-casing by means of said plug and through which thevalve-rod also passes, a spring mounted on said frame and a capconnected with the valve-rod and between which and said frame saidspring operates to hold the valve in an open position, substantially asshown and described.

3. A drain device for water-pipes adapted to be connected with the endof a water-pipe, said device comprising a valve-casing open at the top,at the bottom and at one side, a detachable plug for closing the topopening, a frame secured to'the valve-casing by said plug, a valvewithin the valve-casing and adapted to close the bottom opening therein,a valve-rod loosely connected with said valve and passing upwardlythrough said plug, a spring attachment connected with said frame andoperating in connection with the valverod to hold the valve in an openposition and means for limiting the upward movement of said valve andvalve-rod, substantially as shown and described. 7

In testimony that 1 claim the foregoing as my invention I have signed myname, in presence of the subscribing witnesses, this 15th day ofJanuary, 1903.

JOHN J. MAY.

Witnesses:

F. A, STEWART, C. E. MULREANY.

